| CFM56-7B18/3 ✕ | CFM56-7B18 ✕ | CFM56-7B20/3 ✕ | CFM56-7B20 ✕ | CFM56-7B20/2 ✕ | CFM56-7B22 ✕ | |
|---|---|---|---|---|---|---|
| Family | CFM56-7B | CFM56-7B | CFM56-7B | CFM56-7B | CFM56-7B | CFM56-7B |
| EASA ID | 8CM061 | 3CM029 | 8CM062 | 3CM030 | 4CM039 | 3CM031 |
| Aircraft Engine Manufacturer | CFM International | CFM International | CFM International | CFM International | CFM International | CFM International |
| Aircraft Engine Type | Turbofan | Turbofan | Turbofan | Turbofan | Turbofan | Turbofan |
| Comment | Boeing 737 Next Generation | Boeing 737 Next Generation | Boeing 737 Next Generation | Boeing 737 Next Generation | Boeing 737 Next Generation | Boeing 737 Next Generation |
| Dry Weight (kg) | 2366 | 2366 | 2366 | 2366 | 2366 | 2366 |
| Diameter (mm) | 1549 | 1549 | 1549 | 1549 | 1549 | 1549 |
| Max Rotating Diameter (mm) | 1549 | 1549 | 1549 | 1549 | 1549 | 1549 |
| Length (mm) | 2507 | 2507 | 2507 | 2507 | 2507 | 2507 |
| Wikipedia Article (URL) | en.wikipedia.org/wiki/CFM_International_CFM56 | en.wikipedia.org/wiki/CFM_International_CFM56 | en.wikipedia.org/wiki/CFM_International_CFM56 | en.wikipedia.org/wiki/CFM_International_CFM56 | en.wikipedia.org/wiki/CFM_International_CFM56 | en.wikipedia.org/wiki/CFM_International_CFM56 |
| Fuel | Jet A | Jet A | Jet A | Jet A | Jet A | Jet A |
| Fan Blades | 24 | 24 | 24 | 24 | 24 | 24 |
| Geared Fan | No | No | No | No | No | No |
| Low-Pressure Compressor Stages | 3 | 3 | 3 | 3 | 3 | 3 |
| High-Pressure Compressor Stages | 9 | 9 | 9 | 9 | 9 | 9 |
| Combustion Chamber | Tech Insertion | Tech Insertion | ||||
| High Pressure Compressor Stages | 1 | 1 | 1 | 1 | 1 | 1 |
| Low-Pressure Turbine Stages | 4 | 4 | 4 | 4 | 4 | 4 |
| Afterburner | No | No | No | No | No | No |
| Streams | 2 | 2 | 2 | 2 | 2 | 2 |
| Bypass Ratio | 5.5 | 5.5 | 5.5 | 5.4 | 5.4 | 5.3 |
| Overall Pressure Ratio | 21.4 | 21.59 | 22.4 | 22.61 | 22.77 | 24.41 |
| Maximum Takeoff Thrust (kN) | 86.7 | 86.74 | 91.6 | 91.63 | 91.63 | 100.97 |
| Hydrocarbon Take Off (g/kg fuel) | 0.03 | 0.1 | 0.03 | 0.1 | 0.07 | 0.1 |
| Hydrocarbon Climb Out (g/kg fuel) | 0.03 | 0.1 | 0.03 | 0.1 | 0.23 | 0.1 |
| Hydrocarbon Approach (g/kg fuel) | 0.08 | 0.1 | 0.08 | 0.1 | 0.36 | 0.1 |
| Hydrocarbon Idle (g/kg fuel) | 4.51 | 3.5 | 3.84 | 3.1 | 8.11 | 2.5 |
| Hydrocarbon Unitary Average (g/kN) | 7.56 | 6.32 | 6.26 | 5.44 | 14.61 | 4.22 |
| Hydrocarbon Unitary Sigma (g/kN) | 0.72 | 0.63 | ||||
| Hydrocarbon Unitary Range (g/kN) | 6.74-7.99 | 5.55-6.69 | 13.8-15.9 | |||
| Hydrocarbon Unitary Characteristic (g/kN) | 8.82 | 9.7 | 7.31 | 8.4 | 17 | 6.4 |
| Hydrocarbon Unitary Characteristicto Regulatory (% of limit) | 45 | 49.5 | 37.3 | 42.9 | 86.9 | 32.7 |
| Hydrocarbon LTO (g) | 656 | 549 | 574 | 504 | 1340 | 432 |
| Carbon Monoxide Take Off (g/kg fuel) | 0.17 | 0.6 | 0.15 | 0.6 | 4.26 | 0.5 |
| Carbon Monoxide Climb Out (g/kg fuel) | 0.28 | 0.4 | 0.23 | 0.5 | 11.38 | 0.6 |
| Carbon Monoxide Approach (g/kg fuel) | 5.54 | 3.6 | 5.03 | 3.2 | 11.37 | 2.5 |
| Carbon Monoxide Idle (g/kg fuel) | 46.64 | 28.3 | 43.31 | 25.9 | 49.71 | 22.8 |
| Carbon Monoxide Unitary Average (g/kN) | 81.34 | 52.45 | 73.44 | 47.21 | 108.63 | 39.58 |
| Carbon Monoxide Unitary SD (g/kN) | 3.3 | 3.2 | ||||
| Carbon Monoxide Unitary Range (g/kN) | 77.6-83.5 | 69.8-75.3 | 102.1-114.9 | |||
| Carbon Monoxide Unitary Characteristic (g/kN) | 88 | 64.4 | 79.4 | 58 | 117.5 | 48.6 |
| Carbon Monoxide Unitary Characteristicto Regulatory (% of limit) | 74.6 | 54.6 | 67.3 | 49.2 | 99.6 | 41.2 |
| NOx Take Off (g/kg fuel) | 14.81 | 19.2 | 15.61 | 20.5 | 13.25 | 23.1 |
| NOx Climb Out (g/kg fuel) | 13 | 16.6 | 13.53 | 17.4 | 10.81 | 19 |
| NOx Approach (g/kg fuel) | 7.78 | 9.1 | 7.98 | 9.5 | 9.39 | 10 |
| NOx Idle (g/kg fuel) | 3.65 | 4.3 | 3.77 | 4.3 | 3.75 | 4.5 |
| NOx Unitary Average (g/kN) | 31.46 | 39.99 | 32.59 | 41.83 | 30.58 | 45.16 |
| NOx Unitary SD (g/kN) | 1.1 | 1.1 | ||||
| NOx Unitary Range (g/kN) | 30.4-32.5 | 31.5-33.7 | 30.4-30.8 | |||
| NOx Unitary Characteristic (g/kN) | 33.3 | 46.4 | 34.5 | 48.5 | 32.4 | 52.4 |
| NOx Unitaryto Standard (% of limit) | 40.2 | 55.8 | 40.7 | 56.9 | 37.9 | 59 |
| NOx Unitaryto CAEP2 (% of limit) | 50.3 | 69.7 | 50.9 | 71.1 | 47.3 | 73.7 |
| NOx Unitaryto CAEP4 (% of limit) | 62 | 85.8 | 62.9 | 87.9 | 58.4 | 90.3 |
| NOx Unitaryto CAEP6 (% of limit) | 70 | 97 | 71.5 | 99.9 | 66.4 | 102.6 |
| NOx Unitaryto CAEP8 (% of limit) | 85.5 | 118.4 | 87.5 | 122.1 | 81.1 | 124 |
| NOx LTO (g) | 2729 | 3472 | 2987 | 3829 | 2802 | 4560 |
| Smoke Take Off (SN) | 8 | 10.7 | 8.7 | 11.4 | 0.7 | 12 |
| Smoke Climb Out (SN) | 6.6 | 6.4 | 6.8 | 8 | 0.7 | 10.5 |
| Smoke Approach (SN) | 2.1 | 0 | 2.1 | 0 | 1.5 | 0 |
| Smoke Idle (SN) | 2.1 | 0 | 2.1 | 0 | 0.7 | 0 |
| Smoke Max (SN) | 8.04 | 10.7 | 8.66 | 11.4 | 1.52 | 12 |
| Smoke Sigma (SN) | 1.4 | 2.2 | ||||
| Smoke Range (SN) | 6.8-9.6 | 7.1-11.1 | 0-3.4 | |||
| Smoke Characteristic (SN) | 8.84 | 13.8 | 9.52 | 14.7 | 1.7 | 15.4 |
| Smoke Characteristicto Regulatory (% of limit) | 35.9 | 56.1 | 39.3 | 60.6 | 6.9 | 65.2 |
| Fuel Flow Take Off (kg/s) | 0.842 | 0.854 | 0.896 | 0.913 | 0.903 | 1.021 |
| Fuel Flow Climbout (kg/s) | 0.702 | 0.714 | 0.746 | 0.761 | 0.754 | 0.844 |
| Fuel Flow Approach (kg/s) | 0.256 | 0.26 | 0.268 | 0.274 | 0.278 | 0.298 |
| Fuel Flow Idle (kg/s) | 0.092 | 0.097 | 0.094 | 0.1 | 0.102 | 0.105 |
| Fuel LTO (kg) | 333 | 344 | 348 | 361 | 363 | 390 |
| Fuel Venting Compliant | Yes | No | Yes | No | No | No |
| Carbon Monoxide LTO (g) | 7055 | 4566 | 6729 | 4324 | 9963 | 4002 |
| Compressor Description | 1 fan, 3-stage LP, 9-stage HP | 1 fan, 3-stage LP, 9-stage HP | 1 fan, 3-stage LP, 9-stage HP | 1 fan, 3-stage LP, 9-stage HP | 1 fan, 3-stage LP, 9-stage HP | 1 fan, 3-stage LP, 9-stage HP |
| Emissions Data Status | C | C | C | C | C | C |
| Engine Status | Out of production | Out of production | Out of production | Out of production | Out of production | Out of production |
| NOx Compliance Demonstration | 2.3.2 e) | 2.3.2 e) | ||||
| Turbine Description | 1-stage HP, 4-stage LP | 1-stage HP, 4-stage LP | 1-stage HP, 4-stage LP | 1-stage HP, 4-stage LP | 1-stage HP, 4-stage LP | 1-stage HP, 4-stage LP |